Paint class Introduction

/* Paint class introduction ** paint is the paint brush, which plays an extremely important role in the drawing process. The paint brush mainly stores the color, * style and other painting information, there are many ways to set the paint brush object that specifies how to draw text and graphics. * There are two types of paint objects: one is related to drawing, and the other is related to text painting. ** 1. drawing * setargb (int A, int R, int g, int B); * set the color of the painting. A indicates transparency, R, G, and B indicates the color value. ** Setalpha (int A); * sets the transparency of the drawing. ** Setcolor (INT color); * sets the color of the painting, which is expressed by the color value. The color value includes the transparency and RGB color. ** Setantialias (Boolean aa); * setting whether to use the anti-aliasing function consumes a large amount of resources and slows down the drawing speed. ** Setdither (Boolean dither); * set whether to use image Jitter to make the color of the image smoother and Fuller, and the image clearer. ** setfilterbitmap (Boolean filter ); * If this parameter is set to true, the bitmap image is filtered out during the animation to accelerate the display speed, this setting item depends on dither and xfermode settings ** setmaskfilter (maskfilter); * sets maskfilter. Different maskfilters can be used to implement filter effects, such as filtering, stereo ** setcolorfilter (colorfilter); * sets the color filter to achieve the effect of color conversion when the color is drawn ** setpatheffect (patheffect effect ); * set the effect of the painting path, for example, ** setshader shader (shader); * set the image effect, and use shader to draw various gradient effects ** setshadowlayer (float radius, float dx, float dy, int color); * set the shadow layer under the graph to produce the shadow effect. radius indicates the shadow angle, DX and Dy are the distance between the shadow on the X and Y axes, and color is the shadow color ** setstyle (paint. style); * set the paint brush style to fill, fill_or_stroke, or stroke ** setstrokecap (paint. cap CAP); * When the paint brush style is stroke or fill_or_stroke, set the image style of the brush, such as the circular style * cap. round, or square style cap. square ** setsrokejoin (paint. join join); * set the combination of various images during painting, such as smooth effects ** setstrokewidth (float width); * When the paint brush style is stroke or fill_or_stroke, set the coarse granularity of the brush ** setxfermode (xfermode); * set the processing method when the image overlaps, such as merging, intersection or union, which is often used to make the eraser erasure effect ** 2. text drawing * setfakeboldtext (Boolean fakeboldtext); * simulate and implement bold text, and the effect will be very poor when set to a small font ** setsubpixeltext (Boolean subpixeltext); * set this item to true, will help text display on the LCD screen ** settextalign (paint. align align); * set the alignment direction of the drawn text ** settextscalex (float scalex); * set the zooming ratio of the X axis of the drawn text, you can achieve the effect of text stretching ** settextsize (float textsize); * set the font size of the drawn text ** settextskewx (float skewx); * Set italic text, skewx is a tilting radian ** settypeface (typeface); * sets the typeface object, that is, the font style, including bold, italic, and linebody, ** setunderlinetext (Boolean underlinetext) for non-linefeed, ** set the text effect with underlines ** setstrikethrutext (Boolean strikethrutext), and * set the effect with strikethrough **/

Original article: http://emmet1988.iteye.com/blog/1058526